隨著全球人口膨脹及工業化發展，人類對能源的需求越來越高；在台灣，由於先天不蘊藏足夠的能源，根據109年經濟部能源局資料進口能源佔總供給量97.90%，使得能源問題在台灣更迫切的需要處理，再生能源的開發日漸受到重視，但由於再生能源的「間歇性」及「不可控制性」，因此儲能被視為未來能源科技的重點發展項目。而在能量轉換過程中絕大部份能源皆以「熱能」散失；為了有效利用能源，常藉由熱電轉換系統進行「削峰填谷」電力調節，但熱電轉換過程中熱源不穩定，使得轉換效率不佳，因此，本研究利用CALPHAD熱力學計算軟體Factsage設計適合融熔鹽相變化材料，透過計算固相線、液相線、潛熱變化、成本等條件，篩選出最佳的熔鹽組成，並利用DSC進行熱力學驗證，並以Kissinger方法進行動力學探討，再與常見商用相變化材料HITEC 比較，並且利用腐蝕測試探討長期使用下的容器相容性，預期研究成果能有效針對場域設計適合相變化材料並對在電力運用終能達到「削峰填谷」。

With the global population swelling and rising industrialization trends in developing countries, people's hunger for energy has reached to a higher level. Around 80% of global energy comes from fossil fuels which is high polluted and unrenewable. However, according to the reports, fossil fuels would be exhausted in 40 years. In Taiwan, the main power generation is also from fossil fuel. What's worse is that more than 97% of energy resources are imported, which leads to serious energy shortage in Taiwan. Therefore, the development of renewable energy is drawing more and more attention, but the “intermittent” and “uncontrollability” of renewable energy are still a problem, so how to “storage” energy becomes more and more important these days.
In the process of energy conversion, most of the energy is lost as "heat energy." In order to effectively use energy, the thermoelectric conversion system is often used to adjust the power of "peak-shaving and valley-filling". However, the heat source is unstable, which makes the conversion efficiency is low.
Therefore, with the aid of CALPHAD model, a customized phase change material is designed, which satisfied the criteria including semi-solid state while use, larger energy storage, and lower cost. DSC thermal analysis were conducted to validate the thermodynamic predictions. And Kissinger method for thermokinetic is also used to select. Furthermore, the isothermal dipping test was conducted for long-term use. With the combination of calculation and experiment, this study is expected to design a suitable phase change material for the field which has better performance than the commercial one.

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